Exploring the associations between genetic polymorphisms of metabolic enzymes and susceptibility to polycyclic aromatic hydrocarbon (PAH)-induced chromosomal damage is of great significance for understanding PAH carcinogenesis. Cytochrome P450, glutathione S-transferase, microsomal epoxide hydrolase, NAD(P)H:quinone oxidoreductase, and N-acetyltransferase are PAH-metabolizing enzymes. In this s...

The effects of different drying methods (freeze drying, vacuum oven drying, and shade drying) on the phytochemical constituents associated with the antioxidant activities of Z. officinale var. rubrum Theilade were evaluated to determine the optimal drying process for these rhizomes. Total flavonoid content (TFC), total phenolic content (TPC), and polyphenol oxidase (PPO) activity were measured ...

Many host factors or biomarkers are involved in the process of early DNA damage induced by occupational exposure to polycyclic aromatic hydrocarbons (PAH) as seen in coke-oven workers. This paper aimed to identify complicated causal interrelationship of various biomarkers using the path analysis. In this analysis, we included 235 subjects (166 coke-oven workers and 69 nonexposed controls) whose...

OBJECTIVE This study examined the effectiveness of microwave ovens in assisting elderly persons with disabilities with cooking food. METHOD The participants were five elderly persons who had gross motor, fine motor, or vision impairments but no cognitive impairments. Before the study, none of the participants owned or operated a microwave oven. In this single-subject design of four phases (AB...

The presence of pyrolytic carbon deposits can cause a number of serious problems in the operation of a coke oven. They can inhibit the flow of gas out of the oven; their removal may cause damage to the refractories and the coke pusher equipment, in particular when the deposition is extensive, and can affect the sealing of the oven so leading to undesirable emissions. Some plants burn off the ca...

Media pembelajaran merupakan istrumen yang sangat menentukan keberhasilan proses belajar mengajar. Sebab keberadaannya secara langsung dapat memberikan dinamika tersendiri terhadap peserta didik. Pasca penyebaran wabah Covid-19 ini berefek pada dunia pendidikan, perubahan sistem diarahkan menjadi kebijakan dirumah online. Penelitian bertujuan untuk mengetahui efektifitas media Adobe Flash CS6 o...

This is the first of two articles about the physics of microwave ovens. This article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities. It then considers the absorption of microwaves by foods, discussing the dielectric relaxation of water, penetration depths of electromagnetic waves in matter and,...

Background & Aim: Tragacanth is a natural gum obtained from the dried sap of several species of Middle Eastern egumes of the genus Astragalus, that is a viscous, odorless, tasteless, water-soluble mixture of polysaccharides. Tragacanth is used in pharmaceutical and foods industries as an emulsifier, thickener, stabilizer, and texturant additive. Sponge cake is one of the most popular b...